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3 years ago

In the food chain, when the number of primary consumers increases, the number of secondary consumers:

1 answer:

5 0

Increases. With more food available for the secondary consumers, theres less competition for food. This means the secondary consumers can breed successfully with high chance of offspring survival

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In food chains and webs what trophies level must you have more of than others?

Umnica [9.8K]

The primary producers creatures that makes their own food like plants.

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3 years ago

Read 2 more answers

What mechanism is responsible for the movement of water in this image?

garik1379 [7]

B coriolis effect warmer water rises as it gets cold it sinks back down

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3 years ago

Approximately how far apart were north america and europe 200,000 years ago

Ne4ueva [31]

The correct answer is - 1,180 km.

North America and Europe move away from one another, though on the other end of the plates, the Eurasian and the North American plates are actually merging. Since the rate of moving away is 2 cm per year, and the current distance is 1,184 km between North America and Europe, the distance between them 200,000 years ago was 1,180 km.

To get to the result we only need to multiply the number of years with the annual movement

2 x 200,000 = 400,000

Then divide the result with 100,000, as that is how much cm are in one km

400,000 / 100,000 = 4

And we get 4 km, in this case 4 km less, thus the distance between the two, 200,000 years ago, was 1,180 km.

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3 years ago

In cats, the Dense pigment gene, D/d, codes for melanophilin, a protein involved in the transportation and deposition of pigment

SVETLANKA909090 [29]

Answer:

a. M_D_ : 9/16 Black furred individuals

b. M__dd : 3/16 gray furred individuals (1/16 MMdd + 2/16 Mmdd)

c. mmD_ : 3/16 Brow-furred individuals (1/16 mmDD + 2/16 mmDd)

d. mmdd: 1/16 gray furred individuals.

Explanation:

Available data:

Dense pigment gene, D, codes for melanophilin.
D allele dominant over d.
Gene M/m is responsible for the production of the pigment
M is dominant over m
If D is present, M/m is expressed
If dd is present, M/m is not expressed
DDMM, DdMM, DDMm, DdMm --->Black fur
DDmm, Ddmm ---> Brown fur
ddMM, ddMm -----> Light gray fur

Cross: between two dihybrids

Parental) DdMm x DdMm

Phenotype) Black-furred Black-furred

Gametes) DM, Dm, dM, dm DM, Dm, dM, dm

Punnet Square) DM Dm dM dm

DM DDMM DDMm DdMM DdMm

Dm DDMm DDmm DdMm Ddmm

dM DdMM DdMm ddMM ddMm

dm DdMm Ddmm ddMm ddmm

F1) 9/16 Black-furred individuals, D-M- (1/16 DDMM + 2/16 DDMm + 2/16

DdMM + 4/16 DdMm)

3/16 Brown-furred individuals, D-mm ( 1/16 DDmm + 2/16 Ddmm)

4/16 Gray-furred individuals, dd-- ( 1/16ddMM + 1/16 ddmm + 2/16 ddMm)

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3 years ago

A genetic disorder in which part of the X chromosome seems to be attached to the rest of it by a very thin string of molecules i

Jlenok [28]

Answer:

fragile X syndrome 

Explanation:

FMR1 gene mutations trigger fragile X syndrome.The gene FMR1 offers instructions on how to make a protein called FMRP.

This gene helps to control the output of other proteins and plays a part in the growth of synapses that are specific nerve cell connections.

It creates a variety of developmental issues including intellectual disabilities and cognitive impairment. This disease usually affects males more significantly than women.

4 0

3 years ago